Finding the Fourth Proportional to 316,217.76, 436,387.08 and 172,987.08
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Solution
The fourth proportional to 316,217.76, 436,387.08 and 172,987.08 is: 238,725.77
Step by Step Solution
- Step 1: Write the proportion equation
316,217.76 : 436,387.08 = 172,987.08 : x - Step 2: Convert to fraction form
316,217.76/436,387.08 = 172,987.08/x - Step 3: Cross multiply
316,217.76x = 436,387.08 × 172,987.08 - Step 4: Simplify right side
316,217.76x = 75,489,326,718.93 - Step 5: Solve for x
x = 75,489,326,718.93/316,217.76 - Step 6: Final answer
x = 238,725.77
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.